Thank you helen.
Now I have the real content. One question about the string: and RDB$FIELD_NAME = ''' || fname || ''''; results: field_name = ''COLUMNNAME''' and returns a sql exception. and RDB$FIELD_NAME = ''' || fname || '''; (your example) goes wrong. All other text after is marked as text. How can I realize: Fiels_name = 'COLUMNNAME''? I have test all combinations from one ' to four. Thanks Best regards Olaf [Non-text portions of this message have been removed]
